Reverse Osmosis

#) Reverse Osmosis: Reverse osmosis (RO) is a water purification technology that uses a semipermeable membrane.

(*) This membrane technology is not properly a filtration method. In reverse osmosis, an applied pressure is used to overcome osmotic pressure, a colligative property, that is driven by chemical potential, a thermodynamic parameter.

(*) Reverse osmosis can remove many types of molecules and ions from solutions, and is used in both industrial processes and the production of potable water.

(*) The result is that the solute is retained on the pressurized side of the membrane and the pure solvent is allowed to pass to the other side.

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